/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import {getCurrentInstance, onMounted, onBeforeUnmount, watch} from 'vue'
import {useThemeStore} from '@/store/theme/theme'
import {throttle} from 'echarts'
import {useI18n} from 'vue-i18n'
import type {Ref} from 'vue'
import type {ECharts} from 'echarts'
import type {ECBasicOption} from 'echarts/types/dist/shared'

function initChart<Opt extends ECBasicOption>(
    domRef: Ref<HTMLDivElement | null>,
    option: Opt
): ECharts | null {
    let chart: ECharts | null = null
    const themeStore = useThemeStore()
    const {locale} = useI18n()
    const globalProperties =
        getCurrentInstance()?.appContext.config.globalProperties

    option['backgroundColor'] = ''

    const init = () => {
        chart = globalProperties?.echarts.init(
            domRef.value,
            themeStore.darkTheme ? 'dark-bold' : 'macarons'
        )
        chart && chart.setOption(option)
    }

    const resize = throttle(() => {
        chart && chart.resize()
    }, 20)

    watch(
        () => themeStore.darkTheme,
        () => {
            chart?.dispose()
            init()
        }
    )

    watch(
        () => locale.value,
        () => {
            chart?.dispose()
            init()
        }
    )

    watch(
        () => option,
        () => {
            chart?.dispose()
            init()
        },
        {
            deep: true
        }
    )

    onMounted(() => {
        init()
        addEventListener('resize', resize)
    })

    onBeforeUnmount(() => {
        removeEventListener('resize', resize)
    })

    return chart
}

export default initChart
